How can I develop my design skills as an architect ?

Design- Imagination. If U want to develop ur skills in design just work it out a lot through softwares such as Revit , 3Ds max .. Wherever You are, just look around the buildings . If you amazed at the designs , work it out usng softwares. , If you want some alterations in designs go through it using softwares. Imagination is the keypoint in designing

first you need to improve your imagination skills

need to improve your freehand skills

 need to increase your knowledge from art and other design field